Sash-fastener.



No. 7|0,590. Patented Oct. 7, l902..

J. B. LETOURNEAU.

SASH FASTE'NER.

(Application fllo d Kay 7, 1902.)

2 Sheets-Sheet I.'

(No Model.)

Witnesses @z;

TH: NORRIS PETERS cu. PHoTpLPmo" WASHINGTON. u. c

UNITED STATES PATENT OFFICE.

JOHN B. LETOURNEAU, OF BROGKTON, MASSACHUSETTS.

SASH-FASTENER.

SPECIFICATION forming part of Letters Patent No. 710,590, dated October 7, 1902.

Application filed May '7, 1902. Serial No. 106,294. (No model.)

To all whom, it may concern:

Be it known that I, JOHN B. LETOURNEAU,Of Brockton,in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Sash-Fasteners, of which the following is a specification.

This invention has for its object to provide a simple, compact, effective, and inexpensive fastener adapted to simultaneously lock and unlock both the upper and the lower sash of a window and to exert pressure on each sash in such manner as to prevent rattling.

The invention consists in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification, Figure i represents a front elevation of a window-casing and a pair of sashes therein, the casing being equipped with a pair of sash-fasteners embodying my invention. Fig. 2 represents a section on line 2 2 of Fig. 1. Fig. 3 represents a section on line 3 3 of Fig. 2. Fig. 4 represents asection on line 4 4 of Fig. 1 looking toward the right. Fig. 5 represents a perspective view of one of the fasteners detached. Fig. 6 represents a perspective view of a portion of one of the sashes.

The same characters of reference indicate the same parts in all the figures.

In the drawings, a represents a window-casing havingthe usual uprights l, which bear against the edges of the sashes b and c, and the usual sash-guiding strips 2, 3, and r.

(1 represents a locking-bar which is adapted to slide horizontally in the slot e, formed for its reception in the upright- 1 of the windowcasing, said slot extending crosswise of the sashes h and c. The locking-bar dis provided with teeth d (V, projecting inwardly from its inner edge, the projection of the said teeth being such that they are adapted to enter notches g g, formed in the edges of the sashes h and a, there being a plurality of notches in the edge of each sash, each notch being preferably formed in a metallic strip g, ailixed to the edge of the sash.

h represents a holding-plate which is attached by screws 71 h to the casing a. Said holding-plate has an orifice in which the reduced outer end portion (1 of the locking-bar is adapted to slide.

frepresents a spring interposed between the inner side of the holding-plate hand shoulders formed at the junction of the body and reduced portions of the holding-plate. Said spring is adapted to normally project the locking-bar inwardly and hold its teeth d d in engagement with the notches g, theinner sides of said teeth being pressed yieldingly against the inner ends of the notches by the spring, so that the upper sash is held yieldingly against the guide-strip 2, while the lower sash is held yieldingly against the parting bead or strip 3. The sashes are thus simultaneously locked and prevented from rattling.

t' represents a cam-lever pivoted at t to the outer end of the reduced portion of the locking-bar. faces 6 7, substantially at right angles with each other and at different distances from the pivot t", the arrangement of said faces being such that when the lever is in the vertical position shown in full lines in the drawings the face 6 will bear against the outer side of the holding-plate h and will permit the spring fto hold the' teeth d d in engagement with the sash-notches, as above described. WVhen the lever is moved to the substantially horizontal position, as indicated by dotted lines in Fig. 3, the face 7 bears against the holdingplate 7L, and as the face 7 is farther from the pivot 1" than the face 6 the movement of the cam-lever to the said dotted-line position causes the withdrawal or retraction of the locking-bar, so that its teeth are withdrawn from the notches in the sashes b and c, the sashes being thus simultaneously released.

It will be seen that the above-described fastener constitutes a simple andeffective means for simultaneously locking and releasing the two sashes and for preventing the sashes from rattling. The locking-bar can be made to occupy very little space in crosssection, so that the window-casing does not have to be cut away to any objectionable extent in forming the slot 0 for the reception of the locking-bar and the spring f. The hold- The said lever is provided with two tached and in operation.

ing-plate h, interposed between the springf and the cam-lever t, enables the fastener to be secured and removed by simply inserting and removing the two screws h h, the said plate h serving as a holder which retains the other parts in their proper relative positions as well before they are applied to the window, as indicated in Fig. 4, as when they are at- The fastener can therefore be readily installed and removed. It will be seen that when the cam-lever is turned to retract the locking-bar the bearing of its shorter face 7 against the holding-plate holds the locking-barin its retracted position until the lever has returned to its vertical position. Consequently afterthe sashes have been unlocked they cannot be locked again until the operator moves the cam-lever.

The formation of the locking-bar with the reduced outer portion, which, as above described, passes directly through the orifice in the holding-plate, providesa simple construction which cannot get out of order so long as the pivot 2" remains intact. Moreover, its

construction enablesall of the parts to be held together in their proper relative positions, as-shown in'Fig. 5, when the device is not in its position relatively to a window.

Two of the described fasteners are preferably employed, as indicated in Fig. 1. r

I claim- A sash-fastener comprising a locking-bar having two sash-engaging teeth and an outer portion in line therewith, a holdingplate adapted for attachment to a window-casing and provided with an orifice through which the outer portion of the locking-bar passes, a spring surrounding the locking-bar between the holding-plate and the teeth of the locking-bar, and adapted to project the latter inwardly from the holding-plate, and a camlever pivoted to the outer end of the lockingbar, and held yieldingly by said spring against the outer side of the holding-plate, said lever being formed to retract the locking-bar and hold it in its retracted position.

In testimony whereof I have affixed my sig nature in presence of two witnesses.

JOHN B. LETO'URNEAU.

Vitnesses:

P. W. PEZZETTI, A. D. HARRISON. 

